Attachment for type-writing machines.



No. 819,778. PATENTED MAY 8, 1906. A. H. MARTIN.

ATTACHMENT FOR TYPE WRITING MACHINES.

APPLICATION FILED JAN.25, 1905.

UNITED STATES PATENT OFFICE.

ARTHUR H. MARTIN, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO (J. E. B. LAMSON, OF TOLEDO, OHIO.

ATTACHMENT FOR TYPE=-WFI|TING MACHINES.

Specification of Letters Patent.

Patented May 8, 19o6.

Application filed January 25,1905. Se i 1 -2 fi To all whom it may concern:

-Be it known thatI, ARTHUR H. MARTIN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Im- The principal objects of the invention are 2 to provide a desirable andefiicient holder or shield of simple construction which will support and guide the supplemental ink-ribbon in roper relation to t e primary inkrribbon and record-sheets and will cause the two record-sheets to pass on opposite sides of'the supplemental ink-ribbon when inserting them in t e machine withoutany manipulation or changing of position of the supplemental ribbon or arts of its holder, to provide simple means ibr preventing impresslons on the reverse side of the outer record-sheet, and to provide the supplemental ink-ribbon holder with simple means to prevent the ribbon or holder from catching the front edges of the record-sheets and preventing the ready insertion of the sheets into the machine.

In the accompanying drawings, Figure 1 is a plan view of a supplemental ink-ribbon attachment embodying the invention, showing by full and broken hnes portions of the carriage of a t e-writing machine to which the attachment is applied. Fig. 2 is a transverse section, on an enlarged scale, of the ribbon holder or shield, showing the platen, portions of the carriage, primary ink-ribbon, and record sheets by broken lines. Fig. 3 is an end elevation, on an enlarged scale, of the attachment and a portion of the type-writer carriage. Fig. 4 is a fragmentary section, on an enlarged scale, of the supplemental ink-ribbon holder or shield. Fig. 5 is a perspective view, on a reduced scale, of the supplemental ink-ribbon holder or shield.

Theattachment com rises a shield, holder, or guide, which partia y encircles the platen or eed-roll of the type-writer to support and construction of theattaching holder or shield will also be varied as required guide the su plemental ink-ribbon, separate the record-s eets, and facilitate theirinsertion into the machine, and means for attachin or securing this supplemental ink-ribbon ho der or shield in place on the carriage of the type-writer. The ribbon holder or shield hereinafter described and shown inthe draw;-

' ings is designed and proportioned especially for use on the well-known Remin ton machine, and the holders or shields or, other makes of machines may differ therefrom, as required in matters of the size and arrangement of certain of the parts. The form and devices for the for different makes of machines.

The sup lemental ribbon holder orguide A (shown in the drawings) is curved longitudinally or is of "trough-shape in cross-sew tion, being of a width to loosely embrace the platen P, with which it is to be used, and is of substantially the len th of the platen. It is made of some suitab e thin smooth material having the requisite stiffness to retain its form. Sheet-celluloid answers well for the .purpose but other material could be used. The holder or guide is supported on the type writer carriage in position to embrace or m- .close that portion of-the platen adjacent to which the primary ink-ribbon Rislocated and is provide at its opposite ends with openings or guides I), through which the supplemental ink-ribbon R passes and is held from "lateral displacement. The holder or guide occupies a position between the primary ink-ribbon and platen, and when the machine is primed one record sheet or pa er X is located inside of the holder or guide etween the supplemental ink-ribbon and the platen, while the other record sheet or paper Y is located outside of the holder or guide between the primary and sup lemental ink-ribbons; The holder on gui e is open or slotted lengthwise at'B between the ribbon-guides b to allow the su plemental ink-ribbon to be forced against t e inner record-sheet to produce the second record. The holder or guide is also provided with holes a and 0 or is open at opposite sides of the ribbon-slot B at suitable points to allow the resser-rolls of the carriage, which are shown at d and d by broken lines, to bear against the record-sheets and press them against the platen to enable the feed of the sheets in the usual manner by turning the platen. The presser-rollers are diilerently arranged in different makes of machines, and consequently the location and size of the holes or en spaces 0 0' will vary in the holders or guid hs for difierent machines to properly accord with the difierent'arrangements of the presser-rolls. In the holder or guide shown the holes a at the rear side of the platen are of oval shape, While those, 0, at the front IO side are triangular, with the bases of the trian les adjacent to the ribbon-slot B and the inclined edges 0 of the triangular holes at the opposite ends of the holder or shield diverging forwardly andupwardly. By reason of I 5 theseshapes and arrangement of the holes their edges will not catch the edges of the record-sheets and interfere with t eir ready insertion into the machine, as rectangular holes and holes of other shapes would do. D- represents a thin flexible guard-web, which bridges the ribbon-slot and underlies the supplemental ink-ribbon. Thintextile r'nateri-al answerswell for the ard-Web. The holder or guide A is preferab y made of twothicknesses or superposed layers of mateasi al cemented orotherwi'se secured face to face the rear ed es of the supplemental ink-ribbon and gu-ard -web extend in'between the two thicknesses of the holder or uid'e at 0 the rear edgeoi the ribbon-slot, as s own in Fig. l. The guard-web is cemented .or secared to the holder or guide at opposite sides oi the ribbon-slot, while the ribbon is disconelected and free to be moved longitudinally. 5 Asthcrear edges of the ribbon and guardweb are inclcsed by the overlapping portions,

of the two thicknesses of the shield, they can not engagethe front edges of the record-sheets, which are inserted from the rear, as indi- 40 cated by the arrow in Fig. 2'. As the guardwcbis secured to the opposite edges of the ribbon-slot, it holds these ectges from spreading and distorting the shape of the guide, and as it overlaps the front edge of the slot it ellectuall-y prevents the outer record-sheet from striking and catching on said edge, and it also prevents the ink-ribbon from sa ng down through or working out of the ribbonslot. The guard-web also prevents the sup- 5o plemental' ribbon from making impressions on the reverse side of the outer'reoord-sheet but aethis could be prevented by using a ribbon inked on one-side only or backed by some material to prevent its inking the outer sheet this hast-mentionedfunction of the guard is not so important as the others;

A narrow flexible tape or band E is rcficrably cemented or otherwise secured at its frontedges to the front edge of the ribbonslot and underlies the front edge of the sup-' lementalinkribbon.

owe the ribbon to sink into the ribbon-slot suflieiently to prevent it from striking and smearing the inner record-sheet, but covers 6 5 the front edge of the-ribbon-slot so as to precarriage.

This tape or band a1 vent the inner record-sheet from engaging and catching the latter. It will thus be seen that the holder or guide A also constitutes a guide for properly directing the two recordsheets on opposite sides of the supplemental ink-ribbon when priming the machine.

In the construction shown in the drawings the ribbon holder or guide is supported by two rods E, which pass through loops f at the edges of the holder or guide and rest on the end pieces of the carriage-frame, being held stationarily in-place by suitable brackets G, 1 arranged at the ends of the carriage and to which the ends of the supporting-rods are detachably secured, as by nuts g, screwed on the 5 threaded ends of the rods which pass through i slots 9 in the brackets G. The brackets pass 1 under the laten-shaft, which, together with the rods movement.

hold the brackets from vertical By tightening the nuts g the brackets are clamped against the ends of the The slots g" in the brackets are elongated, thus enabling the roper adjustment of the latter and the i101 er or ide on the carriage. The brackets G rotata ly su port spools H for the supplemental ink-1i bon which dpasses through slots 9 in the brackets an is attached to the spools. Au-

tomatic mechanism could be provided for feeding the sup lernental ribbon; but as this 5 ribbon moves ongitudinal'lly with the carriage the type strike it throughout a considerable portion of its length, and it is sui'licicnt to turn one or the other of the ribbon-spools by hand once in a while to present a new portion of the ribbon to the type.

The holder guid'e is put in place by inserting one edge thereof (before the-supportingrods are attached) between the platen and .the Presser-rolls d and rotating the platen in .much the same manner as the record-sheets are ordinaril inserted. The rods F are then insertedin t e edge loops of the holder and attached to the brackets G. The holder is a fixture to the carriage when once attached, but can be readily detached when not desired by removing the rods F and feeding the holder or 'de out by the rotation of the platen. N o manipulation of the attachment 1s required to insert and remove the record sheets after it is adjusted and secured to the carriage. i

The attaching devices shown and above described are of a construction and arrangement suitable for applying the ribbon holder or guide to a Remington type-writer, and they canbe differently constructed and arranged, if necessary, for different makes of machines.

' I claim as m invention 1. The com ination with a type-writingmachine platen, and devices for pressing the record-sheets against the platen, of a guide which is stationarily supported adjacent to position to allow two record sheets to be inserted between the platen and presser devices on opposite sides of the guide without moving the guide, an ink-ribbon supported adjacent to the platen, said guide being constructed to allow the presser devices to press the record-sheets against the platen and having parts which direct the record-sheets to opposite sides of said ink-ribbon, substantiaiiy as set forth.

2. The combination with a type-writingmachine platen, and devices for pressing the record-sheets against the platen, of a curved guide which partially surrounds the platen and separates two record-sheets, said guide providing open spaces which allow the presser devices to press the record-sheets against the platen, an ink-ribbon supported adjacent to the platen, and parts on said guide arran ed to direct the record-sheets to opposite si es of said ink-ribbon, substantially as set forth.

3. The combination with a type-writin machine platen, and devices 'for pressing t e record-sheets against the platen, of a curved guide which partially surrounds the platen and separates two record-sheets, said guide providing open spaces which allow the presser devices to press the record-sheets against the platen, and an ink-ribbon, said guide having means for supporting said ink-ribbon adjacent to the platen, and portions arranged to direct the record-sheets to opposite sides of said ink-ribbon, substantially as set forth.-

4. The combination with a type-writingrnachine platen, and devices for pressing the record-sheets against the platen, of a curved guide which partially surrounds the platen and separates two record-sheets, said guide providing open spaces which allow the presser devices to press the record-sheets against the platen, an ink-ribbon, and a guard located between said ink-ribbon and the outer record sheet, said guide having portions arranged to direct the record-sheets to opposite sides of said ink-ribbon and guard, substantially as set forth.

5. In an attachment of the character described, a substantially trough-shaped guide which partially incloses the t pe-writer platen and has guides at its ends or an inkribbon, a ribbon-slot between said guides, and open spaces at opposite sides of said ribbon-slot, substantially as set forth.

6. In an attachment of the character described, a substantially trough-shaped guide which partially incloses the type-writer the type-writer platen and has a slot for an ink-ribbon, and portions at one edge of said slot which overlap the adjacent edge of the ink-ribbon to direct record-sheets to opposite sides of the ribbon, and means overlapping the opposite edge of said ribbon-slot to prevent the engagement of the latter with the record-sheets, substantially as set forth.

8. In an attachment of the character described, a guide which partially surrounds the type-writer platen and has aslot for an ink-ribbon, and portions at one edge of the slot which inclose the adjacent edge of the ribbon, and a guard which is inclosed by said portions at one edge of the ribbon-slot and overlaps the opposite edge of the ribbon-slot, substantially as set forth.

9. In an attachment of the character described, a guide which partially surrounds the type-writer platen and has a slot for an ink-ribbon, and portions at one edge of said slot which inclose the adjacent edge of the ribbon, a guard which is inclosed by said portions at one edge of the ribbon-slot and overlaps the opposite edge of the ribbon-slot, and a' band which is secured to the op osite edge of said ribbon-slot and extends in between said ribbon and guard, substantially as set forth.

10. In an attachment for type-writing machines, the combination of a curved guide adapted to partially surround the platenand separate two record-sheets and provided with openings through which the presser devices press the record-sheets against the platen, an ink-ribbon retained in position by said guide,. said guide having parts arranged to direct the record-sheets to opposite sides of said ink-ribbon, and means for supporting the guide in position to partially surround the platen, substantially as set forth.

Witness my hand this 24th day of January, 1 905.

. ARTHUR H. MARTIN. Witnesses:

CHARLES W. PARKER. EDWARD C. HARD.

'Ioo 

